The old lady had expected to see all her relatives when she was ill in hospital, but none came to see her ______ many of her neighbors offered their help．

A．when

B．as

C．because

D．while

根据GB/T19001-2008，质量手册可以不包括（）。

A.质量管理体系的范围

B.形成文件的程序或对其引用

C.产品技术要求

D.质量管理体系过程之间的相互作用